Internet - VoIP Clients (13)

Skype allows users to make voice and video calls over the Internet. Although calls to other Skype users are free, other types of connections (landlines, SMS text) are not. Additional features include instant messaging, file transfer and conferencing.

sPortable is a version from PortableApps.com.

Note: The program became adware after its inclusion in the database (after its purchase by Microsoft).

Zoom allows you to have virtual video meetings, voice and/or video chat, screen sharing, and more. zmPortable is a portable launcher for this virtual meeting and collaboration platform.

TeamViewer is a screen sharing, remote control and collaboration tool connecting devices for troubleshooting, presentations or installations. Supports standard chat, high-quality voice and video, file transfer, whiteboard, session recording, remote printing, screen sharing and more. The program can work with paranoid firewalls, functions as a VPN between clients, will display quality based on connection speed and includes browser access.

Clients are also available for Mac, Linux, iOS, ChromeOS/Android and more with support for many world languages.

Alternatively, a PortableApps version is also available: TeamViewer Portable.

qTox is an easy, secure instant messaging and VoIP client for the distributed Tox network. The program includes standard features like chat between users, group chats, file transfer with image preview, as well as high-quality audio and video calls with group call capability.

The program is peer-to-peer, meaning no central server is necessary for the network to function.

Cross-platform with clients available for Mac, Windows, FreeBSD and Android. Alternatively, qTox Portable is also available.

MicroSIP allows high quality VoIP calls via the open Session Initiation Protocol to other SIP-compatible phones or regular telephones. The program is easy to configure and light on system resources and supports video, instant messaging, secure connections (via client-to-client TLS encryption) and standards compatibility.

This SIP softphone is based on the Windows PJSIP stack. For regular phones, the program requires an account with a (non-free) SIP Provider.

PhonerLite is an SIP softphone for making and receiving VoIP calls. It supports multiple SIP profiles, integrated phone book and call logging.

Note: PhonerLite is a stripped-down version of Phoner, with a different but more user-friendly GUI. They use the same DLL and configuration data (sipper.ini) and can co-exist in the same folder.

TeamSpeak is a VoIP tool focused on efficient system and bandwidth usage. Although targeting online gamers, the program includes collaboration tools including file transfer, easy permissions, secure connections and a customizable interface. Other premium audio functions include surround sound capability and positioning. The program can also function offline, meaning you don't need the Internet to connect with other users on your local network.

Cross platform with clients available for Mac, Linux, iOS and Android.

Brosix is a secure instant messaging and collaboration tool featuring voice, video, and text chat, whiteboard, and a private team network. Interface includes tabbed chat, chat history, spell check and anti-virus support.

Messages with other Brosix users are secured and can be sent when they are offline and delivered upon return. All communication with other Brosix users is encrypted and clients are available for Mac, Linux, iOS, Android, as well as via a Web Client to use the Brosix network with most browsers.

Note that the program requires creating a login using an email address and has been limited to only three users in the free tier.

TeamTalk is a feature-rich conferencing application aimed at providing everyone a VoIP solution regardless of connection speed. Includes video conferencing, desktop sharing, file sharing, audio streaming, recording and much more. Audio push-to-talk and audio detection are both available. Features include quality controls, packetloss resistance, de-noising of outgoing audio, 3D positioning of sound and much more.

Note: This program may or may not function with public servers, meaning it will require a running server to connect with other users.